CN202538777U

CN202538777U - Guide cylinder

Info

Publication number: CN202538777U
Application number: CN2012201471569U
Authority: CN
Inventors: 陈志勇; 张建林; 栾波; 马韵升; 史庆苓
Original assignee: Chambroad Chemical Industry Research Institute Co Ltd; Shandong Chambroad Holding Group Co Ltd
Current assignee: Chambroad Chemical Industry Research Institute Co Ltd
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2012-11-21
Anticipated expiration: 2022-04-10

Abstract

The utility model belongs to the field of fine chemical engineering machines and particularly relates to an axial flow guide cylinder which is used in a multi-phase stirred autoclave and has an automatic rotation pumping function. The guide cylinder consists of an upper cylinder body and a lower cylinder body; a lower opening of the upper cylinder body is connected with an upper opening of the lower cylinder body; and the cylinder walls of the upper cylinder body and the lower cylinder body are both uniform arc gradual thickening cylinder walls, and the gradual change ratio is 28. When materials enter the guide cylinder, certain pressure difference is generated according to gravity and fluid mechanics principles, so that the automatic rotation pumping effect, namely a Venturi effect can be achieved; and the axial flow thrust is increased to ensure that more two kinds of materials are fully mixed, so that reaction time is shortened, and production cost is reduced.

Description

Guide shell

Technical field

The utility model belongs to the fine chemistry industry mechanical field, relates to a kind of guide shell, be specifically related to have in a kind of heterogeneous stirred autoclave automatic rotation swabbing action the axial flow guide shell.

Background technology

, fine chemistry industry relates to heterogeneous stirred autoclave in producing through regular meeting; Normally used in large-size reactor is that straight barrel type or the low waist formula guide shell of receiving increase axial flow thrust; So that two or more materials fully mixes in the agitated reactor; Alr mode normally axial-flow type stirs, and is about to material and pushes the agitated reactor bottom fast to, and upwards stirring through the arc design of agitated reactor bottom then forms two kidney type systemic circulations.

When solid-liquid mix to stir, if expect that admittedly proportion is excessive, or quantity will form when surpassing certain proportion and sinks to the bottom phenomenon.Existing solution has three kinds usually: a kind of is to increase the diameter of original paddle or change its structure; But owing to limited by kettle; The inner shape of agitated reactor has determined that the area of blade can not be infinitely great; If change the operating pressure that the inner shape of agitated reactor can increase the paddle motor, thereby power consumption and cost increase; Another kind is to increase paddle group number or improve rotating speed to improve axial thrust; But one group of paddle of every increase or improve 1 and change rotating speed of agitator; Corresponding motor load can improve a lot; The increase of power consumption means the rising of cost, and this runs counter to the energy-saving and emission-reduction policy that country proposes at present, and cost is too high also can to reduce the competitiveness of product in market; The third method is to increase a guide shell; Flow backwards to reach the purpose of increase axial flow thrust through guide shell; But common straight barrel type is limited with the axial flow thrust that low receipts waist type guide shell can increase; Gu if after the viscosity of material and proportion or quantity surpassed certain value, common guide shell will be ineffective.

Summary of the invention

Weak point to prior art; The utility model provide have in a kind of heterogeneous stirred autoclave automatic rotation swabbing action the axial flow guide shell; Through special guide shell shaped design; Utilize barodynamics and hydromechanical principle to reach a kind of effect of automatic rotation suction, i.e. Venturi effect, and increase axial flow thrust greatly with this.

The concrete technical scheme of the utility model is achieved in that a kind of guide shell; Form by upper shell and lower shell; The under shed of upper shell is connected with the upper shed of lower shell, and the barrel of upper shell and lower shell is even circular arc gradation type barrel, and the gradual change ratio is 28; Gradual change is than the ratio for the heavy wall of upper shell and lower shell barrel and thin-walled, and heavy wall is the wall thickness of upper shell and lower shell junction.

The barrel of said upper shell and lower shell is a gradual change thickening type barrel, and the barrel of upper shell is the thickening of gradual change from top to bottom, and the barrel of lower shell is the thickening of gradual change from bottom to top.

Through this shaped design, when material got into guide shell, fluid was walked around fast different in the guide shell inward turning; The active force of corresponding guide shell relevant position is also different; So be designed to even circular arc gradual change thickening type barrel to the barrel of upper shell and lower shell, the gradual change ratio is 28, utilize barodynamics and fluid mechanics principle to produce certain pressure differential; Thereby reach a kind of effect of automatic rotation suction; Be Venturi effect, and increase axial flow thrust, materials two or more in the agitated reactor is fully mixed with this.

The waist of said cylindrical shell is directly than being 0.5-0.75; The diameter ratio that is waist mouth place flat circle and upper shell nozzle place flat circle is 0.5-0.75; The height of upper shell is 900mm-1500mm, and the height of lower shell is 600mm-1200mm, and the diameter of upper shell nozzle and lower shell nozzle is 1500mm-3000mm; The arc length of upper shell side is 600mm-1500mm, and the arc length of lower shell side is 500mm-1200mm.Adopt the guide shell of this design, when material gets into from cylindrical shell top, because of self gravitation can be at waist interruption-forming vortex; Thereby produce suction effect automatically and increase axial thrust; So not only need not to increase original paddle diameter, need not to change the paddle structure, more need not increase paddle group number; Even rotating speed that can corresponding minimizing paddle greatly reduces cost simultaneously to reach the effect of energy-saving and emission-reduction.

The utility model is applied in the above fine chemistry industry synthesis reaction vessel of 60m3; Be fastened on the inwall of agitated reactor through fixedly reinforcing bar or support, the wall thickness of general agitated reactor is also little, and the mechanical stress that can bear is not high yet; So guide shell adopts the alloy in lightweight steel; Both guaranteed mechanical strength, again can weight reduction, its weight is as far as possible little under the situation that guarantees constancy of volume.The guide shell of this project organization, its axial flow coefficient is big, if one group of paddle is set in the upper shell of guide shell, also can increase corresponding radial load and shearing force greatly, and the very high material of viscosity is mixed fast, has improved the reaction time.

The utility model is simple in structure, and is easy to use, reaches a kind of effect of automatic rotation suction, and the axial flow coefficient is big, has increased axial flow thrust, and materials two or more in the agitated reactor is fully mixed, and has improved the reaction time, has reduced production cost.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the vertical view of the utility model;

Fig. 3 is the A-A cutaway view of Fig. 2;

1 is upper shell among the figure, the 2nd, and lower shell.

The specific embodiment

The utility model is made up of upper shell 1 and lower shell 2, and the under shed of upper shell 1 is connected with the upper shed of lower shell 2, and the barrel of upper shell 1 and lower shell 2 is even circular arc gradation type barrel.

The barrel of said upper shell 1 and lower shell 2 is a gradual change thickening type barrel.

The waist of said cylindrical shell is directly than being 0.5-0.75; The height of upper shell 1 is 900mm-1500mm; The height of lower shell 2 is 600mm-1200mm; The diameter of upper shell 1 nozzle and lower shell 2 nozzles is 1500mm-3000mm, and the arc length of upper shell 1 side is 600mm-1500mm, and the arc length of lower shell 2 sides is 500mm-1200mm.

The utility model is applied in the above fine chemistry industry synthesis reaction vessel of 60m3; Be fastened on the inwall of agitated reactor through fixedly reinforcing bar or support, the wall thickness of general agitated reactor is also little, and the mechanical stress that can bear is not high yet; So guide shell adopts the alloy in lightweight steel; Both guaranteed mechanical strength, again can weight reduction, its weight is as far as possible little under the situation that guarantees constancy of volume.

Adopt the guide shell of this design, when material gets into from cylindrical shell top, because of self gravitation can increase axial thrust thereby produce suction effect automatically at waist interruption-forming vortex.If one group of paddle is set in the upper shell of guide shell, also can increase corresponding radial load and shearing force greatly, the very high material of viscosity is mixed fast, improved the reaction time.So not only need not to increase original paddle diameter, need not to change the paddle structure, more need not increase paddle group number, even rotating speed that can corresponding minimizing paddle greatly reduces cost simultaneously to reach the effect of energy-saving and emission-reduction.

In mixing of materials of the same race, and guarantee rotating speed remain on 80 rev/mins constant, and after stirring 1 hour, under the same conditions, the mixing of materials degree exceeds 14.954% than straight barrel type guide shell when using the utility model, exceeds 7.491% than receiving waist type guide shell.

Claims

1. a guide shell is made up of upper shell (1) and lower shell (2), it is characterized in that: the under shed of upper shell (1) is connected with the upper shed of lower shell (2), and the barrel of upper shell (1) and lower shell (2) is even circular arc gradation type barrel.

2. guide shell according to claim 1 is characterized in that: the barrel of upper shell (1) and lower shell (2) is a gradual change thickening type barrel.

3. guide shell according to claim 1; It is characterized in that: the waist of said cylindrical shell is directly than being 0.5-0.75; The height of upper shell (1) is 900mm-1500mm, and the height of lower shell (2) is 600mm-1200mm, and the diameter of upper shell (1) nozzle and lower shell (2) nozzle is 1500mm-3000mm; The arc length of upper shell (1) side is 600mm-1500mm, and the arc length of lower shell (2) side is 500mm-1200mm.